import java.util.Stack;

public class Test {
    public boolean IsPopOrder (int[] pushV, int[] popV) {
        Stack<Integer> stack = new Stack<>();
        int i = 0;
        int j = 0;
        for(i = 0; i < pushV.length; i++){
            stack.push(pushV[i]);
            while(stack.peek() == popV[j]){
                stack.pop();
                j++;
            }
        }
        return stack.isEmpty();
    }

    public static void main(String[] args) {

    }

}
